620205501231 has 24 divisors (see below), whose sum is σ = 948624921504. Its totient is φ = 389117644800.

The previous prime is 620205501187. The next prime is 620205501247. The reversal of 620205501231 is 132105502026.

It is a happy number.

620205501231 is a `hidden beast` number, since 62 + 0 + 20 + 550 + 1 + 2 + 31 = 666.

It is not a de Polignac number, because 620205501231 - 2²⁵ = 620171946799 is a prime.

It is a super-2 number, since 2×620205501231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620205501195 and 620205501204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620205501131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1854031 + ... + 2162831.

It is an arithmetic number, because the mean of its divisors is an integer number (39526038396).

Almost surely, 2^620205501231 is an apocalyptic number.

620205501231 is a deficient number, since it is larger than the sum of its proper divisors (328419420273).

620205501231 is a wasteful number, since it uses less digits than its factorization.

620205501231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321951 (or 321948 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 620205501231 in words is "six hundred twenty billion, two hundred five million, five hundred one thousand, two hundred thirty-one".